Railway traffic controlling apparatus



Jan. 26,- 1932. c, LAY 1,842,413

RAILWAYTRAFF'IC CONTROLLING APPARATUS Filed March 24, 1931 2 Sheet-She'et l INVENTOR. I a, H, Lay,

1% ATTORNEY.

Jan. 26, 1932. I c, LAY 1,842,413

RAILWAY TRAFFIC CONTROLLING APPARATUS 7 Filed Marph 24, 1931 2 Sheets -Sheet 2 INVENTOR. & H- k 4 iii- A TTORNEY.

relay 3B and lamp YA of signal S3 to the minus terminal of battery C3. The yellow lamp YB oi the lower group in this signal will also be lighted, the circuit being from the plus terminal of battery C3, through back contact 8 of rela 8L, front pointof contact 9 of polar contact 10 of relay 3B--in 1 the-reverse position,.and lamp YB to the drawings.

minus terminal of battery 03.1 When relay:

3A becomesenergized in the normal direction,la1np GA of signal S3 will become lighted by virtue of a circuit which will-be obvi-;

sponse to deenergization of relay 3A, red

" lamp "EA will become lighted, the circuit being from the plus terminal ofbattery C3,

: pointoi. contact 11 of relay BAS, and lamp RA to the minus terminal of battery G3.

; Similarly, when relay 3BS opens, red lamp *RB'willbecome lighted by virtue of a circuit @Which will be obvious without detailed explanation. It is understood, of course, that I all lamps of signal S3 will be extinguished except when the approach lighting relay 3L 7 is deenergized. The controlling circuits for each of the signals are similar to those which have been traced for signal S3.

As shown'in the drawings, an automatic tra n stopping device D is provided for each track section, and this device is provided with a clearingcircuit which 1s closed when and onlvwhen both of the polarized relays A and B for the associated section are energized in thejnormal direction. Considering the'device D8 for section 2 3,'for example 'the clearing circuit for this device is from one terminal of its operating winding, 7 through polar contact 130i relay-3B in the normal position, front contact 2601 the same relay, front neutral contact 2710f relay 3A, and polar contact 140i relay 3A inthe normal position, to the other terminal ofl'the 1 operating windingfor the device; D3.

I As'shown 1n the drawings, the section to the left of point 1, is occupied by a train F,

so that trackrelaylT is'open .fThecircuits for relays 1A and 1B are therefore open,

so that relays lAS and'lBs are deenergized.

i If approach lighting relaylL were deenergized, due to the presence of a train in section 12, the red lamps RA'and'RB of signal 'in the reverse direction. Relay 8BS' being- Sl would both be lighted. Relay 2B is deenergized because its circuit is open at track relay 1T. Relay-lB'S being open, relays 2A Land 3B are energizedinthe reversedirec- .tion. Relay 213 being open, relayY2BS is open, so that relays 3A and 4B'are energized closed, relays 4Aand-5B are'energized in normal direction; 'Relay 5A is energized in J lays direction,

contactv 8 of relay 3L, back f YB of thissign'alis also lighted." Signal S4 which path includes a the normal direction because relay lBS is closed.

ing relay for each 'signal'is'deenergized due to the train approaching such signal.) This signal then indicatesthat the second section in advance is occupied. At point 3, both re- 3A and 3Bare energized in the reverse so that the yellow lamps YA and YB of signalSidare b'oth; lighted. Signal S3 indicates, therefore, that the third section'in advance is occupied'by a train.f'Belay 4A being energized'ni the'normal'direction, lamp A ofsignal S4 is lighted, and relay 413 be ing energized the reverse direction, lamp then indicates, that the fourth section-in advance is occupied by a train. Relays 5A and 5B are both energized in the normal direction.

unoccupied.

VVhe'n a train moving toward the left en ters sectionk5, it will open tracki'elay 5T,

' and the contacts 17 and 18 of this relay will .then exclude relay 53 from its circuit and will close an auxiliary path for relay 4A, resistance2 l to take the place of relay 5B. It'iollowsthat relay 4A will remain 1 energized; Similarly, when the *train advancesinto the section to the point at which track relay 5AT will open, contacts 16 and 19 of this'relay will close another i branch for the line circuit oi relayseA and 5B, which branchincludes aresistance 23, withthe result that relayA will still'remain energized. Of course, the'opening'of relay 5T will open the circuit for relay 5A, 11*

and the opening 'oi relay 5AT will again open the circuit for relay 6A at another point. The operation of the apparatus duringthe progress or the train through the succeeding sections shown in the drawings, willbe obvi- PL ous from the foregoing without detailed :explanation. r

The train stopping devices ,1) may, of course, be omitted, if desired; and the same thing is true of the approach lighting relays.

Furthermore, if approachlighting of the'sig- 'nals is desired, it maybe accomplished in any other suitable manner; 3

Although I have herein shown; and described onlyone form'o'f apparatus embodying my invention, it is understood, that various changes and modifications may: be made therein within 1 the scope of the appended claims without departing fromthe'spirit and scope of my invention."

. polarized relays, and .trailic governing means Havin t us described my invention, what I claim is e 1. In combination,arailway trackdivided into sections,two polarizedrelays A and B foreach section, means operating according V as relay B for each sect on is energized or deenerglzed to supplylcurrent ofnornial or re;

verse polarity to relayA for the section next inythe rear and to relay B for thesecond section in the rear, track circuitsfor the sections including track r-clays for the control of said for thesections controlled by said polarized relays. i l

2. In combination, a railway track divided into sections, two polarized relays A andB for each section, a line circuit foreach two ad- JELCGIlt sectionsincluding m series relay A'for the i'orwardflsection and relay B for the rear 2 section, means for supplying each oflsaid cir' cuits with current of normal or reverse-polarity according as relay B fQIft-hGSGClElOIl next" infadvanceoiisuchfforward section is energizedwor deenergizedptraclr circuits for the sectionsincluding track relays for thecontrol of said line circuits, "and trafiic governing means for: the sections-controlled by said polarized relaysj a 3. Incombination, a railway track divided into sections, two-polarized relays Aand B for each section, aislow releasing repeater relay for each relay B, means *for control- I ling each repeater relay bya neutral front contactof the associated relay B,1neans operating according as the repeater relay for each sectionis energized or deenergized tosupply ii current of normal or reversepolaritytorelay A r01 the sectionnext in the rear and to 1'6 lay B for the second section in the rear, track circuits for said sections including track relaysfor the control of said polarized relays,

into sections, twopolarized relaysA and B Landtraffic governing means for the sections peate'rfrelays;

' 4. Incombination, a railway trackdivided by. said controlled-by saidpolarized relays and refor the foi'ward section and relay B for the rear section, means for supplying each of said circuits; with current of-normal or re verse polarity according relay B for the section next in advance of such forward sect on is energizedor deenergized, meansoperating when any one section is occupied by a train to open the line circuits including both relays A and B for such section and to close a branch path for'thecirjcuit including relay A of the section next in advance, andtraflic governingnieans for the sections controlled by said polarized relays. f i a s 6. Incombination, a railway track divided intoisections, twopolarized relays A andB so j for each section, a line circuit for each two adjacent sections including in series relay A for the forward sectionandxrelayB for the rear section as well as an approach lighting 1 1 relay forthe section next in advan'ce'of such forwardsecti'on, means for supplyingeach of Y said circuits with current of normal or relays. p t 7. In combination, a railway track divided intosections, two polarizedfrelays A and B foreach, section, means operating according as relay B for each section is energizedjor l deenergized to supply current of normal or reverse polarity torelay A forthe section next in the remand to relayB for the second section in the rear, track circuits for the seci31OIiS1I1ClllCl111g track relays for the control of said polarized relays, and a train stopping device for each section, and ac1earing circuitifor each device closed it and only-if both relays A and for the associated section are energized in normal direction.

[In testimony whereof I aiiix mylsignatureY 110-,

- oHAnLEs HQLAY.

for each section,a linecircuit for eachtwo ,"il-ClJflCBIltSGCtlOHS including in series. relay A- I ..;for the forwardsectioii and relayfB forthe p H m lrear section, means for supplying each of I i saidf circuitsfwith current of normal orre-i V versepolarlty according as relay" B for the sectlon vnext in advance of such forward secrtion islenergized or deenergized, a track cir-.

having front, contacts included in the two ma foreachsection including a track relay line circuits of the section, a shunt around the B relayfor eachsection including a back and"signals forthe sections controlled 5. In icombination,a railway traclrdivided gocontact ofth'e track relayQ-for'such.section, said polarized relays,

7 into I sections, two polarizedrelays A "and; B

for eachfsection, a line circuit for .eachtwo.

; adj acentysections including in series relay 

